Analysis of acidic Photosystem II-interacting herbicides in lake and river water by capillary electrophoresis

The separation of cyanophenolic (Ioxynil and Bromoxynil) Photosystem II- interacting herbicides and mecoprop in surface water extract was obtained on a polyvinyl alchol packed capillary in 75 mM acetate buffer, pH6, at 16 kV. Styrene-divynyl benzene packed cartidges were used for solid phase extraction of rel surface water samples at neutrl pH. To increase method sensitivity different injection techniques, namely hydrodynamic, electrophoretic and field amplified sample injection (FASI, were compared